To produce a felt fleece having homogeneous surface density by improving the flow of a felt material in free fall of the felt material after opening.

This device for producing a felt fleece has rotating cylinders 2 and 2 having scratching needles planted on the side peripheries thereof and installed in parallel, a charging device for charging a raw material A to the side peripheries of the rotating cylinders 2 and 2, and a space S for dispersing a felt material, formed out of inside permeable conveyer belts 4' and 4' moving in the down direction and outside permeable conveyer belts 4 and 4 moving in the down inner direction. Further the lower ends of the outside permeable conveyer belts 4 and 4 are formed so as to be mutually adjacent to form an opening for discharging the accumulated felt, and the device for producing the felt fleece has discharging roles 5 installed in the lower side of the opening.